PRESSURE TESTING APPARATUS WITH VACUUM VALVE, SOLENOID VALVE, FIRST TIMER, SECOND TIMER AND NEGATIVE PRESSURE GAUGE FOR FUEL TANK

摘要

PURPOSE: A pressure testing apparatus for a fuel tank is provided to manufacture the optimal fuel tank by using the volume of pressure identical to the volume of pressure generated from a fuel tank of a real vehicle. CONSTITUTION: A pressure testing apparatus for a fuel tank includes the fuel tank(10), a vacuum valve(20), a solenoid valve(30), a first timer(40), a second timer(50), and a negative pressure gauge(60). The vacuum valve(20) exhausts the air of the fuel tank(10) when connecting to the fuel tank(10). The solenoid valve(30) is installed between the vacuum valve(20) and the fuel tank(10) and selectively turns on/off the vacuum valve(20). The first timer(40) controls the volume of pressure of the fuel tank(10) by adjusting a time required for maintaining an on-state of the solenoid valve(30). The second timer(50) adjusts a time required for maintaining an off-state of the solenoid valve(30).